Bell & Gossett 611S Series 60 Centrifugal Pump

B&G 172718LF Series 60 Model 611S Pump

The Bell & Gossett 172718LF (Series 60, Model 611S) is a high-performance, Lead-Free three-piece centrifugal sirkulator engineered to facilitate increased fluid distribution in demanding commercial infrastructures. Its robust casing is calibrated to stabilize internal pressure at high flow rates, while the three-piece architecture neutralizes mechanical noise common in large-scale circulation. By prioritizing a lead-free non-ferrous internal design, this unit facilitates rapid thermal distribution and maintains structural stability, ensuring that large building loops receive reliable pressure delivery during peak operational cycles without the risk of lead leaching.

Driven by a high-efficiency Single Phase (S) motor, the 172718LF executes superior power delivery via an independent oil-lubricated bearing frame. The three-piece design isolates the motor from the pump volute to neutralize heat transfer and mitigate mechanical noise during high-volume operation. By leveraging a precision-aligned shaft and specialized mechanical seal, this configuration minimizes mechanical stress and stabilizes rotational frequency, providing maximum uptime and reliability for mission-critical commercial circulation service.

Key Features of B&G 172718LF 611S

• Lead-Free construction ensures safety in potable water systems
• Quiet Single Phase motor for commercial building environments
• Back pull-out design simplifies seal and bearing service
• Superior non-ferrous internals prevent scaling and pitting
• High USGPM flow capacity for larger commercial networks
• In-line mounting reduces floor space requirements
• Versatile application for heavy-duty DHW and hydronic service